Issue
A Missing Reference error occurs when deploying a workflow:
Error Code
Missing reference at ItemReferenceField ‘AA’ in InlineFunction ‘Split’ in Event ‘Sent Email’ in Activity ‘Send Email’. Error: While trying to resolve the following reference root.configuration.itemReferences[{“internalId”:33}], an error occurred: reference not found.
Resolution
There is a reference called 'AA' that is used in a Split function on the CC field of a particular Send Email step. This was resolved by removing the Split function and then adding it back with the same AA reference on the Send Email step.